Estimate the Indicated Probability by Using the Normal Distribution as an Approximation

question 123

Multiple Choice

Estimate the indicated probability by using the normal distribution as an approximation to the binomial distribution.
-A multiple choice test consists of 60 questions. Each question has 4 possible answers of which one is correct. If all answers are random guesses, estimate the probability of getting at least 20% correct.

• A)0.0901
• B)0.8508
• C)0.1492
• D)0.3508

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